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Calça_ elegante sempre.

Cool math mental multiplication trick - become a genius solving math instantly! Watch other tecmath videos also.

Hate Math? These Mental Tricks Will Have You Multiplying Faster Than Einstein Ever Could! « Math

Here is my blog that describes different ways you can multiply. These ways support conceptual understanding and are even more effective than the traditional procedure most people learned. The one pictured was created by students to ensure they didn't forget to multiply any of their factors.:

Hate Math? These Mental Tricks Will Have You Multiplying Faster Than Einstein Ever Could! « Mind Hacks

Interesting multiplication "tricks" that students might enjoy--may even have students explain why the tricks work

sparkle light - Google+

Math is amazing

Get Rich or DIY Tryin': Industrial Pipe Curtain Rod... I wonder if I could do something similar for a ceiling mounted shower curtain ?